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   1 /* @(#) $Header: /tcpdump/master/tcpdump/aodv.h,v 1.1 2003-08-06 06:49:39 guy Exp $ (LBL) */
   2 /*
   3  * Copyright (c) 2003 Bruce M. Simpson <bms@spc.org>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *        This product includes software developed by Bruce M. Simpson.
  17  * 4. Neither the name of Bruce M. Simpson nor the names of co-
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY Bruce M. Simpson AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL Bruce M. Simpson OR CONTRIBUTORS
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33 #ifndef _AODV_H_
  34 #define _AODV_H_
  35
  36 struct aodv_rreq {
  37         u_char          rreq_type;      /* AODV message type (1) */
  38         u_char          rreq_flags;     /* various flags */
  39         u_char          rreq_zero0;     /* reserved, set to zero */
  40         u_char          rreq_hops;      /* number of hops from originator */
  41         u_long          rreq_id;        /* request ID */
  42         u_long          rreq_da;        /* destination IPv4 address */
  43         u_long          rreq_ds;        /* destination sequence number */
  44         u_long          rreq_oa;        /* originator IPv4 address */
  45         u_long          rreq_os;        /* originator sequence number */
  46 };
  47 #ifdef INET6
  48 struct aodv_rreq6 {
  49         u_char          rreq_type;      /* AODV message type (1) */
  50         u_char          rreq_flags;     /* various flags */
  51         u_char          rreq_zero0;     /* reserved, set to zero */
  52         u_char          rreq_hops;      /* number of hops from originator */
  53         u_long          rreq_id;        /* request ID */
  54         struct in6_addr rreq_da;        /* destination IPv6 address */
  55         u_long          rreq_ds;        /* destination sequence number */
  56         struct in6_addr rreq_oa;        /* originator IPv6 address */
  57         u_long          rreq_os;        /* originator sequence number */
  58 };
  59 #endif
  60
  61 #define RREQ_JOIN       0x80            /* join (reserved for multicast */
  62 #define RREQ_REPAIR     0x40            /* repair (reserved for multicast */
  63 #define RREQ_GRAT       0x20            /* gratuitous RREP */
  64 #define RREQ_DEST       0x10            /* destination only */
  65 #define RREQ_UNKNOWN    0x08            /* unknown destination sequence num */
  66 #define RREQ_FLAGS_MASK 0xF8            /* mask for rreq_flags */
  67
  68 struct aodv_rrep {
  69         u_char          rrep_type;      /* AODV message type (2) */
  70         u_char          rrep_flags;     /* various flags */
  71         u_char          rrep_ps;        /* prefix size */
  72         u_char          rrep_hops;      /* number of hops from o to d */
  73         u_long          rrep_da;        /* destination IPv4 address */
  74         u_long          rrep_ds;        /* destination sequence number */
  75         u_long          rrep_oa;        /* originator IPv4 address */
  76         u_long          rrep_life;      /* lifetime of this route */
  77 };
  78 #ifdef INET6
  79 struct aodv_rrep6 {
  80         u_char          rrep_type;      /* AODV message type (2) */
  81         u_char          rrep_flags;     /* various flags */
  82         u_char          rrep_ps;        /* prefix size */
  83         u_char          rrep_hops;      /* number of hops from o to d */
  84         struct in6_addr rrep_da;        /* destination IPv6 address */
  85         u_long          rrep_ds;        /* destination sequence number */
  86         struct in6_addr rrep_oa;        /* originator IPv6 address */
  87         u_long          rrep_life;      /* lifetime of this route */
  88 };
  89 #endif
  90
  91 #define RREP_REPAIR             0x80    /* repair (reserved for multicast */
  92 #define RREP_ACK                0x40    /* acknowledgement required */
  93 #define RREP_FLAGS_MASK         0xC0    /* mask for rrep_flags */
  94 #define RREP_PREFIX_MASK        0x1F    /* mask for prefix size */
  95
  96 struct rerr_unreach {
  97         u_long          u_da;   /* IPv4 address */
  98         u_long          u_ds;   /* sequence number */
  99 };
 100 #ifdef INET6
 101 struct rerr_unreach6 {
 102         struct in6_addr u_da;   /* IPv6 address */
 103         u_long          u_ds;   /* sequence number */
 104 };
 105 #endif
 106
 107 struct aodv_rerr {
 108         u_char          rerr_type;      /* AODV message type (3) */
 109         u_char          rerr_flags;     /* various flags */
 110         u_char          rerr_zero0;     /* reserved, set to zero */
 111         u_char          rerr_dc;        /* destination count */
 112         union {
 113                 struct  rerr_unreach dest[1];
 114 #ifdef INET6
 115                 struct  rerr_unreach6 dest6[1];
 116 #endif
 117         } r;
 118 };
 119
 120 #define RERR_NODELETE           0x80    /* don't delete the link */
 121 #define RERR_FLAGS_MASK         0x80    /* mask for rerr_flags */
 122
 123 struct aodv_rrep_ack {
 124         u_char          ra_type;
 125         u_char          ra_zero0;
 126 };
 127
 128 union aodv {
 129         struct aodv_rreq rreq;
 130         struct aodv_rrep rrep;
 131         struct aodv_rerr rerr;
 132         struct aodv_rrep_ack rrep_ack;
 133 #ifdef INET6
 134         struct aodv_rreq6 rreq6;
 135         struct aodv_rrep6 rrep6;
 136 #endif
 137 };
 138
 139 #define AODV_RREQ               1       /* route request */
 140 #define AODV_RREP               2       /* route response */
 141 #define AODV_RERR               3       /* error report */
 142 #define AODV_RREP_ACK           4       /* route response acknowledgement */
 143
 144 struct aodv_ext {
 145         u_char  type;                   /* extension type */
 146         u_char  length;                 /* extension length */
 147 };
 148
 149 struct aodv_hello {
 150         struct  aodv_ext        eh;             /* extension header */
 151         u_long                  interval;       /* expect my next hello in
 152                                                  * (n) ms */
 153 };
 154
 155 #define AODV_EXT_HELLO  1
 156
 157 #endif /* _AODV_H_ */